September 2005
Beginner
462 pages
12h 56m
English
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Appendix C. Net-SNMP Tools
This appendix provides brief summaries of the command-line tools included in Version 5.2.1 of the Net-SNMP package (available from http://net-snmp.sourceforge.net).
Instead of trying to describe all the options to all the commands, we've focused on those that are most important and useful. We have also pointed out a few cases in which the behavior of the commands differs from the behavior that's described in the manual pages.
Net-SNMP and MIB Files
By default, Net-SNMP reads the MIB files in the directory /usr/local/share/snmp/mibs. When you install Net-SNMP, it populates this directory with a few dozen MIB files, including the UCD MIB (Net-SNMP used to be called UCD-SNMP) and the RFC 1213 MIB (MIB-II). Net-SNMP uses the MIB files to translate between numeric object IDs and their textual representations. The MIB files also give the tools access to information about each object (its syntax, the type of access allowed, its description, etc.). Adding a vendor-specific MIB file to Net-SNMP is as simple as placing it in the mibs directory and setting the environment variable $MIBS to ALL, as discussed in the next section.
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